Nouveau - Jul 2017 - [PATCH v2 03/12] drm/nouveau: Handle drm_atomic_helper_swap_state failure

drm_atomic_helper_swap_state() will be changed to interruptible waiting
in the next few commits, so all drivers have to be changed to handling
failure.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
Cc: Ben Skeggs <bskeggs at redhat.com>
Cc: nouveau at lists.freedesktop.org
---
 drivers/gpu/drm/nouveau/nv50_display.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/nv50_display.c
b/drivers/gpu/drm/nouveau/nv50_display.c
index 8fb55b96c40f..3bfea54ffd7c 100644
--- a/drivers/gpu/drm/nouveau/nv50_display.c
+++ b/drivers/gpu/drm/nouveau/nv50_display.c
@@ -4122,6 +4122,10 @@ nv50_disp_atomic_commit(struct drm_device *dev,
 			goto err_cleanup;
 	}
 
+	ret = drm_atomic_helper_swap_state(state, true);
+	if (ret)
+		goto err_cleanup;
+
 	for_each_plane_in_state(state, plane, plane_state, i) {
 		struct nv50_wndw_atom *asyw = nv50_wndw_atom(plane_state);
 		struct nv50_wndw *wndw = nv50_wndw(plane);
@@ -4135,7 +4139,6 @@ nv50_disp_atomic_commit(struct drm_device *dev,
 		}
 	}
 
-	drm_atomic_helper_swap_state(state, true);
 	drm_atomic_state_get(state);
 
 	if (nonblock)
-- 
2.11.0